WINTHS®
WINTHS® is expert software for the precise calculation of thermal stresses in glazing and the effective prevention of thermally induced glass breakage.
Why WINTHS®?
Certified Software
Certified and tested by independent testing institutes
Internationally recognized
Results generated by our software are internationally recognized
Easy to Use
Designed to be intuitive and user-friendly
Always Up to Date
Regular updates and new solutions, always in line with the latest standards
Partnerships
Strong partnerships with Bundesverband Flachglas, VFF, and Metall und Mehr
Customer Satisfaction
a reliable partner for long-term customer satisfaction
Professional Calculation
Calculation of thermally induced stresses in glass panes
Glass Breakage Prevention
Helps minimize the risk of thermally induced glass breakage
WINTHS®
WINTHS® is the leading software solution for calculating thermally induced stresses and preventing glass breakage in facade and window glazing. Developed for engineers, planners, and glass manufacturers, WINTHS® simulates the thermal behavior of glass structures under real-world conditions, taking location, climate, and shading into account.
The software automatically performs stress calculations in accordance with NF DTU 39 P3. It provides a reliable basis for determining whether the glass needs to be heat-treated, thereby reducing the risk of costly glass breakage after installation.
WINTHS® - also available as an online version
Use WINTHS® Online directly in your browser, with no local installation required. The online version calculates thermally induced stresses in glass caused by solar radiation. It takes location, climate data, glazing configuration, frame design, and shading into account to assess the risk of glass breakage at an early stage.
Applications & Features
WINTHS® supports the calculation of thermal loads and thermally induced stresses in glass. It takes temperature distributions, solar radiation, location data, glazing configuration, frame design, and shading into account.
This allows potential risks of glass breakage to be identified, assessed, and documented at an early stage in the planning process. WINTHS® is particularly well suited for stress analysis, material selection, and the reliable assessment of complex glazing systems.
Thermal Stresses
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WINTHS® calculates temperature fields and thermally induced stresses in glazing. This enables critical stress conditions to be identified at an early stage and the risk of glass breakage to be assessed reliably.
Shading Analysis
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Self-shading and external shading caused by buildings, blinds, columns, trees, or curtains can be taken into account. This shows how shading influences the thermal load on the glass.
Location & Climate
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Calculations are based on location, orientation, climate data, and solar radiation. This makes it possible to simulate realistic thermal load conditions for specific construction projects.
Glass Configurations
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WINTHS® supports various types of glazing, including multi-pane insulating glass, coated glass, and heat-absorbing glass. This allows different glazing configurations to be evaluated and compared.
Standards-Compliant Verification
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Calculations can be performed and documented in accordance with relevant standards, including NF DTU 39 P3. This provides traceable results for planning and expert reports.
Risk Assessment
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Critical areas, temperature differences, and potential areas of high thermal stress are clearly visualized. This makes it easy to determine whether annealed glass is sufficient or whether heat-treated safety glass is required.
Advantages of Other Software vs. WINTHS®
Function
Other
Often fails to account for dynamic shading changes
Uses generalized regional assumptions
Results may be difficult to verify in the event of a claim
Often leads to unnecessary oversizing
WINTHS®
Hourly simulation of the sun’s path
Precise integration of location and climate data
Calculations in accordance with NF DTU 39 P3
Precise and cost-effective material selection
Partners & Clients
Frequently Asked Questions
What standards and calculation methods does WINTHS use for verification?
WINTHS calculates the thermomechanical stresses in glass panes fully automatically based on the recognized French standard NF DTU 39 P3 and established European guidelines.
How accurately can complex shading conditions be modeled?
Very precise. WINTHS simulates spectral solar radiation in accordance with VDI 3789 for any geographic location worldwide. The software accounts for shading caused by the building itself and external objects (e.g., neighboring buildings, roof overhangs, pilaster strips) as well as interior or exterior sunshade systems. This allows for the determination of critical, uneven temperature gradients at the edges of the glass, calculated down to the hour, throughout the entire year.
Does the software also support modern, complex glass restorations?
Yes. WINTHS offers a comprehensive database of manufacturer spectral data and calculates single-, double-, and triple-pane insulated glass units. Coated glass (Low-E, solar control), highly absorbent glass, laminated safety glass (LSG), and gas fillings in the air space between the panes are all precisely incorporated into the thermal analysis.
What direct economic benefits does WINTHS offer during the planning phase?
The software prevents costly planning errors. Instead of prescribing thermally toughened glass (ESG/TVG) across the board—which is costly—WINTHS determines the actual stresses. You can immediately see where less expensive float glass is sufficient and at what point thermal tempering is technically mandatory. This optimizes material costs while also protecting against liability claims resulting from glass breakage after installation.
Can WINTHS be integrated into existing glass sizing workflows?
Yes, via a direct interface connection. WINTHS integrates seamlessly with the WINSLT® software (for determining the spectral-physical properties of glass and solar shading) and GLASGLOBAL® (for structural analysis in accordance with DIN 18008). Project data can be transferred directly, which minimizes the need for manual data entry and reduces the risk of errors.
